PROBLEM TO BE SOLVED: To suppress switching between notification and notification stop of a notification part according to a temperature change following travel.SOLUTION: A controller of a transmitter measures as a transit time, a time when an acceleration detected by an acceleration sensor becomes a threshold for travel determination or higher. The controller transmits a transmitter signal in a first transmission frequency until the transit time reaches a low-frequency transmission time t1, and transmits the transmitter signal in a second transmission frequency having a higher frequency than the first transmission frequency from the low-frequency transmission time t1 until a set time t2.SELECTED DRAWING: Figure 4
【課題】走行に伴う温度変化に応じた報知部の報知と報知停止との切り替わりを抑制すること。【解決手段】送信機のコントローラは、加速度センサによって検出される加速度が走行判定用閾値以上となる時間を走行時間として計測している。コントローラは、走行時間が低頻度送信時刻t1までの間は第1の送信頻度で送信信号を送信し、低頻度送信時刻t1から設定時刻t2までは第1の送信頻度よりも高頻度な第2の送信頻度で送信信号を送信させる。【選択図】図4
TIRE PNEUMATIC PRESSURE DETECTOR, TIRE PNEUMATIC PRESSURE MONITOR, AND TIRE PNEUMATIC PRESSURE MONITORING SYSTEM
タイヤ空気圧検出装置、タイヤ空気圧監視装置、及び、タイヤ空気圧監視システム
2017-01-12
Patent
Elektronische Ressource
Japanisch
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